From Longman Dictionary of Contemporary Englishbasebase1 /beɪs/ ●●●S1W1 verb[transitive] to have your main place of work, business etc in a particular placeThe paper had intended to base itself in London.be based in somethingThe new organization will be based in Dallas. →based Grammar In this meaning, base is usually either passive or reflexive (=followed by myself/itself etc). →base something on/upon something→ See Verb table
basebase2 ●●●S2W2 noun1lowest part [countable usually singular]BOTTOMa)the lowest part or surface of something syn bottombase ofThere is a door at the base of the tower.the base of a trianglea frozen dessert with a biscuit basea wine glass with a heavy baseThe leather of his left trainer was coming away from its rubber base.b)the lowest point on a plant or part of your body, where it joins another part syn bottombase ofa hole in the base of the treeHe was killed by an axe blow to the base of his skull.► see thesaurus at bottom2knowledge/ideas [countable]BASIC the most important part of something, from which new ideas develop syn foundationIndia has a good scientific research base.base forThey were laying the base for a new economic recovery.3military [countable]PM a place where people in a military organization live and workmilitary/naval/air base4company/organization [countable, uncountable]COME FROM/ORIGINATE the main place from which a person, company, or organization controls their activitiesbase forHe used the house as a base for his printing business.5people/groups [countable usually singular]ALL/EVERYTHING the people, money, groups etc that form the main part of somethingThe company has built up a loyal customer base.By broadening the tax base (=all the people who pay taxes), he could raise more revenues.an attempt to strengthen the city’s economic base (=things that produce jobs and money)The country’s manufacturing base (=all the factories, companies etc that produce goods in a country) has shrunk by 20%. →power base6substance/mixture [singular, uncountable]MIX the main part of a substance, meal etc to which other things are addedpaint with an oil basebase forVodka is the base for many cocktails.7sport [countable]DSB one of the four places that a player must touch in order to get a point in games such as baseball8 →be off base9chemical [countable]HCC technical a chemical substance that combines with an acid to form a salt10numbers [countable usually singular]HM technical the number in relation to which a number system or mathematical table is built up, for example 10 in the decimal system11 →touch base (with somebody) —basal adjective → cover (all) the basesat cover1(12)COLLOCATIONS – Meaning 2: the most important part of something, from which new ideas developadjectivesa good baseThis data provided a good base for further research.a solid/firm/strong baseA good education should give you a solid base for life.a sound/secure baseA child needs a responsive mother in order to form a secure base for future development.a broad baseThe first year of the course aims to provide students with a broad base of knowledge.a knowledge baseYou’re building up a knowledge base that you’ll be able to use later.verbshave a basePermanent staff have a better base from which to plan their career development.provide a baseIt is essential to provide a sound base from which economic progress can be made.build a baseBy concentrating on our core businesses we will build a strong base from which to exploit future opportunities.give somebody a baseThe training gives you a broad base in actually running an organization.